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Finding the Fourth Proportional to 234.65, 351.92 and 88.40

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Solution

The fourth proportional to 234.65, 351.92 and 88.40 is: 132.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.65 : 351.92 = 88.40 : x
  2. Step 2: Convert to fraction form
    234.65/351.92 = 88.40/x
  3. Step 3: Cross multiply
    234.65x = 351.92 × 88.40
  4. Step 4: Simplify right side
    234.65x = 31,107.53
  5. Step 5: Solve for x
    x = 31,107.53/234.65
  6. Step 6: Final answer
    x = 132.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.